Carrier.



MITCHELL.

CARRIER.

. APPLICATION FILED DEQ. 8, I915. 1,241,238. Patented Sept. 25,1917.

3 SH EETSSHEET I.

//\/ VEA/TO/ e W. MITCHELL.

CARRIER.

APPLICATION FILED DEC.8. I9I5. I 1,241,238. Patented Sept. 25,1917.

3 SHEETSSHEET 2- L, 7 HM i V V W m AWfWEYE W. MITCHELL.

CARRIER.

APPLICATION FILED DEC-8,1915.

3 SHEETSSHEET 3.

irnn stains rarnnr @FFiQE.

WILLIAM MITCHELL, or m nweuknn wiseonsln. Assienon To MiT'o'HELL MANU-FACTURING 00., or MILwAUKnn'WIscensIn, e. CORPORATION or WISCONSIN.

CARRIER.

Application filed December 8, 1915.

To all whom it may concern: I

Be it known that l, WILLIAM MITCHELL, a citizen of the United States,and resident of Milwaukee, in the county of Milwaukee and Stateof'Wiscon'sin, have invented new and useful Improvements in Carriers, ofwhich the following is a description, reference being had to theaccompanying draw ings, which are a part of this specification. Theinvention relates to carriers. The invention is designed moreparticularly to provide an elevated carrier for use in modern sanitarybarn construction for transporting material Within 'or'in and out of thebarn." v l i The invention is further designed to provide a new andimproved form of lock and trip for the tiltable carrier bucket.

The invention is further designed to provide a new and lmproved form ofbrake fo the raising and lowering mechanism.

The invention is further designed to provide in combination with acarrier which rides on both a rail and a wire trolley, a guard forpreventing disengagement of the carrier wheels from the track when theypass from the rail to the wire.

With these and other objects in view, the

invention consists in the several features hereinafter set forth, andmore particularly defined by claims at the conclusion hereof.

In the drawings, Figure l is a side View of the device embodying theinvention, showing the bucket locked in its lowered position. v

Fig. 2 is aside view similar to Fig. 1, showing the'bucket unlocked inits raised position, parts being broken away;

Fig. 3 is an end View of the device;

Fig. 4 is a section taken on the line 44: of'Fig. 1";

Fig. 5. is a section taken on the line 5-5 of Fig. 1;

Fig. 6 is a section taken on the line 66 of .Fig. 1;

Fig. 7 is a section taken on the line 7-7 of Fig. 1 when the bracket isin raised position;

Fig. 8: is a section taken on the line 8-8 of Fig.1; V N

Fig. 9 is a section taken on the line 9-9 of Fig. I; p ,r I

Fig. 10 is a section taken on the line IO lO of Fig. 1;

Specification of Letters Patent.

Patented Sept. 25, 191?.

Serial No. 65,650.

Fig. 11 is a section taken on the line 'Fig. 12 is a section taken onthe line 121'12 of Fig. 10;

Fig. 13 is a section taken on the line 1313 of Fig. 10. V

The device, in general, comprises a track or trolley, trolley-wheelsmounted on said track, a main carrier-frame connected to said wheels andsuspended below the track,

abiic'ket or receptaclecarrying frame slid ably mounted on saidmain-frame, a bucket or receptacle swingingly mounted on said I-be amform, the upper flange portion of,

the beam forming the running surface which portion ispr'eferably usedwithin the barn and a wire or cable section 15 forming a continuation ofthe rail and extending outside of the barn to the place where it isdesired to unload the material carried by the bucket. The end 16 of thewire is disposed within one side of the channel of the rail 14 andisanchored to the rail supporting hangers 17 and a portion of the wireadjacent said end passes under a clip 18 and is secured therein by a setscrew 19, the end 14 of the rail gradually sloping down to the wire. Y

The trolley-wheels20, are provided with rail engaging flanges 21adjacent the sides of the rail and a central circumferential wireengaging groove 22, said wheels being journaled on stud shafts 23mounted on wheel-supporting brackets 24.

The main carrier frame comprises a pair] of upright bars 25 secured attheir upper ends by bolts 26 to spaced apart coupling members 27 alongitudinally extending shaft 28 journaled in said members and securedtherein adjacent endwise movement by collars 29, and upright extensions30 on said members having recesses 31 therein for receiving the lowerknobbed ends 32 of the brackets 24 and cooperating with detachablelocking plates 33 to form a swivel connection between'the wheel bracketsand the frame.

The bucket-carrying frame comprises a U-shaped frame of channel formwith the flange portion of the channel on the Outer side, the uprightchannel portions 36 of said frame adapted to slidably engage the bars25, the lower ends 37 of said upright portion being provided withinwardly exends and sides of which are secured together by'angle ironstrips 40, the upper edges of the ends and sides being reinforced byangle-iron strips 41, Figs. 1, 2 and 3. Trunnions 42- are mounted on theends of the bracket below its center of gravity and are journaled in thebearing brackets 38 so that the open-end of the bucket will be normallydisposed below the ends of'the bucket-carrying frame and in dischargingposition'unless prevented from doing so by the locking means. i

.The means for locking the bucket in upright position comprises a pairof clips 43 which surround and slidably engage the upright bucket-frameportions 36 and which are provided with looking slots 44 for receivingthe locking pins 45, carriedv on the upper central portions of the endsof the bucket,-Figs. l, 2, 3 and 8. Resultantly,

when the swinging bucket ismoved to its upright position and the lockingpins 45 are disposed within the slots 44 any tendency of the bucket totip'willbe prevented and it will then be in loading position, as shownin Fig. 1. V

The means for controlling the locking means comprises a trip lever 46pivotally mounted on a bracket 47 on the transverse portion of theU-shaped frame 35 and flexible connections'between said lever and clips43. and 49 connected at one of their ends to hooks 50 and, 50 on saidlever and passing through curved guide channels 51 on the bucket-frameand. connected at their other ends to hooks 51 and 51 on the clips andalso chains 48 and 49 connected at one of. their ends to'the chains 48and 49 respectively and at their other ends to hooks 52 and 52 at thelower end of the lever 46. The hooks 51, 51 and 52 and 524 are disposedon opposite sides of the" pivot of the lever 46 so that when the lever46 is shifted to either side' of its normal upright position the chains48, 49 and 49 and 484 will cooperate to raise the clips 43 upwardly outof locking engagement with the pins or lugs 45 on the bucket. WVhenthevbucket is in raised position, means are provided to engage the shoe46 on the lever 46 for automatically actuating the trip lever 46 torelease the locking means so that the bucket These connections consistof chains 48' may tip to discharge its contents and this consists of acam bracket orstop 52 which is generally on the wire 15 at a place'outside the barn where it is desired to dump the bucket, Figsl and 2.

In connection with trip devices of this kind where thetrip lever 46 ismounted on the bucket-frame directly below and in line with shaft 28,means are provided forpermitting the shoe 46 to clear the shaft 28v whenthe bucket is being brought to its elevated position or is being loweredtherefrom. This means comprises the bracket .47 whichis pivotallymountedat its lower end 5-4-upon the top of the channel and adjacent one sidethereoffof the frame 35 so that it may be'broug'ht'up to upright po- V,sition adjacent this side or may swing down toward the other side underwhich condition its movement is limited by a stop 55,

Figs. 6 and 7. The bracket 47 is provided I with a hook 56 at itsupper'end andvthe lever 46 is pivotally secured below the hook and onthe same side of the bracket as the stop55, so'that normally the weightof the,

lever will swing the bracket and lever outwardly as shown in,Fig.6.YUnderthese conditions, when the-bucket-carrying frame is being raised toelevated position the shoe 46" will be tipped overfar enough to clearthe shaft-28, as shown in Fig. 6 and on a further raising of the bucketframe, the hook one of their ends 58 to the coupling members' 27 andthence'passing over pulleys 59, carriedby guide brackets 60 on thebucketframe, upwardly and wound around and se- .cured at their otherends to clips or collars 61on the shaft'28,,a pulley 62 mounted "on icethe end of'said shaft 28 and an endless chain 63' passing over saidpulley for. driving engagement therewith. Resultantly, when the operatorpulls on one side of the chain 63, the pulley-'62 and shaft 28 areturned to wind up the flexible connections 57 upon the shaft 28,. andthe ,pulleys 59 being mounted upon said connections rise, carrying thebucket-frame with them which slides upwardly in the frame bars 25 untilthe frame reaches its elevated position,

. shown in Fig. 2.

The brake for controlling the raising and lowering mechanism comprisesbrake shoes .64 and 64 connected to arms 65 and 65 by bolts 66. Thesearms 65'and 65 are provided withcentrally disposed slots for receivingthe shaft 28 to loosely mountsaid brake thereon. The brake arm 65 ispro.-

"vided with an operating handle 68 and a cam slot 69 disposed betweentheshaft 28 and the brake shoe 64. A cam roller 7 0 carried by a pin 71mounted on an extension 72 of one coupling member 27 is 'movablydisposed in said slot. The roller always remains'in a relatively fixedposition and the cam slot 69 is-so formed that when the roller 70 is inmidposition both brake shoes 64 and 64 are out of engagement with thebrake wheel 62 and the shaft 28 is then free to rotate. VVhen the rolleris at the lower end of the slot and the handle 68 is down, the brakeshoe 64 will be out of and the brake shoe 64 will be in engagement withthe pulley and this will occur whenever the operator moves the lever 68down. When the operator pulls on the chain 63 to rotate the shaft 28 topull up the bucket frame, the brake shoe 64 will be automatically movedout of engagement and the arms 65 and 65 will be moved to mid-positionso that the shaft 28 may be rotated to raise the bucket frame. \Vhen theroller moves upwardly in the slot, the distance between the shoe 64 andthe shaft is shortened by the movement ofthe arms 65 and 65" under theaction of the cam 69 and roller-carrying arm 72 and the shoe 64 is thusbrought into engagement with the pulley 62 and this occurs'whenever theoperator releases the lever orwhen he stops pulling on the chain 63 inthe direction shown by the arrow in.Fig. 4 asthe weight of the bucketand frame acts to reverse the direction of rotation of the shaft28,.thus bringing the roller 70 into the upper portion of the slot 69and consequently automatically applying the'brake to the wheel. When theoperator moves the lever 68 down, as previously described, the brakeshoe 64 will act to retard the descent of the bucketframe or to stop it,if desired. Thus the shoe 64 forms in efiect a clutch which isautomatically released to permit the rotation of the shaft 28 when thechain 63 is operated to raise the carrier frame.

iVhile it is necessary to have a guard for the trolley wheels where theyare running on the wire or cable 15 it is likewise neces sary to providefor moving this guard up out of the way when the carrier is running onthe rail sections, especially on the curves and also to move it out ofthe path of the lower ends of the rail-supporting hangers 17. This guardmeans consists of a guard plate 7 3 for each trolley wheel disposedadjacent the outside of the wheeland means for raising and lowering saidguard plate.

Each guard plate 78 is fastened to arms 74 which extend around thetrolley wheel and thence inwardly into a plate forming connected guideflanges 75 which are slidably mounted in guideways 76 in opposite sidesof the bracket 24, Figs. 10, 11, 12 and 13. The means for holding theplate 73 and the frame'formed by the arms 7 4 and flanges 75 so as tokeep the guards above the wheel, as shown in Figs. 1, 9 and 10,comprises a latch 77 pivotally disposed within a slot 78 in the bracket24. A strap 7 9 is connected to the flanges 75 and its transverseportion80 is adapted to rest upon the top 81 of the end of the latch 77, asshown in Fig. 9. The latch 77 i's normally held in this position by aspring 82 disposed in the bracket 24 and pressing upwardly against thearm 84 of the latch. To permit the guard plate to drop automaticallywhen the carrier starts on the wire, means are provided for releas ingthe latch 77 from engagement with the portion 80. This means comprises afinger 85 which rides under a cam trip 86 secured to the rail justbefore the carrierleaves the rail for the wire, which trip moves the upper end of the latch inwardly and out of engagement with the portion 80of the guard frame and thuspermit the guard to slide down in the guidesand be disposed below the wheel at oneside, as shown in Figs. 1 and 3()n the return trip of the carrier when it passes from the wire to therail, the lower end of the guard plate rides up on a cam plate 87thereby lifting the guard frame upwardly and due to the inclined portion88 on the end of the latch it is moved past the end of the latchcomprising the spring 82 after which the latch, under the action of thespring 82, moves into locking engagement with the portion 80 of theguard-frame and the vated position.

The operation of the device in brief is as follows The bracket 39secured in upright leading position by the clip 43 and pins 45 is filledwith the material to be carried out of or within the barn, Fig. 1. Thenthe operator guard is held in eleby turning the shaft 28, through thepulley 62 and chain 63, lifts the bucket-frame and bucket to elevatedposition, the brake automatically locking the shaft 28 against movement.Then the carrier is moved along on the rail and as it' leaves the railfor the wire, the guards fall down at the sides of the wheels. When ithas traveled the desired distance on the cable 15 the trip lever 46strikes the cam 53 thereby releasing the clips 43 from lookingengagement with the bracket which, due to its connection with'the frametips over and discharges its contents. The carrier is then returnedalong the wire and just after it strikes the rail the guards on thetrolley wheels are moved upwardly.

The rails being mounted in the barn above the art.

l/VhatI claim as my-invention L In an elevated carrier, the combination,with a track, trolley wheels mounted thereon, wheel supporting membersand a shaft connected to said members and suspended below saidtrack, ofa frame suspended belowsaid shaft, means for raising and lowering saidframe, a bucket swingingly mount- .ed in said frame and normally movableto discharging position, means for securing said bucket in uprightloading position, and

V means for automatically.releasing'said locking means totrip saidbucket comprising abracket pivotally mounted for limited movement onsaid frame, a trip lever pivotally mounted on said bracket and providedwith a hook for engaging said shaft, a trip-shoe normally disposed ininclined position, but movable to: upright position on the engagementofthe hook with said shaft, and a cam plate on said track for engagingsaid lever.

2. In an elevated carrier, the combination, with a track, trolley-wheelsmounted thereon, wheel supporting members, a main carrier frameconnected to said members and suspended below said track including ashaft and a wheel and chain for revolving said shaft, a bucket carriedby said frame, and

Copies of this patent may be obtained for means connected to said shaftfor raising and lowering said bucket, of a brake for said shaftcomprising brake-members loosely mounted on said shaft and carrying abrakeshoe, one of said brake-members having a cam slot therein, and afixed member engaging in said slot to automatically move saidbrake-members to bring the brake-shoe against the wheel when the chainis released by the operator. s

3. In an elevated carrier, the combination, with a main carrier frameincluding a revoluble shaft provided with a wheel, of a carriersuspended below said frame, means connected to the carrier and saidshaft for,

raising and lowering the carrier on the turning of said shaft, means forturning said shaft, and a brake comprising a pair of brake shoesdisposed on opposite sides of said wheel and, means for bringing saidshoes into alternate frictional engagement with said wheel.

4. In an elevated carrier the combination,

ture. v

WILLIAM MITCHELL.

five cents each, by addressing the Commissioner of Patents, Washington,D. G. p

